Liquid substituted 2H-benzotriazole mixtures, stabilized composi

Details Liquid substituted 2H-benzotriazole mixtures, stabilized composi Liquid substituted 2H-benzotriazole mixtures, stabilized composi

1988-04-11

1990-11-27

Shah, Mukund J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D24916

Patent

active

049737015

ABSTRACT:
Liquid substituted 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of 2-(2-hydroxy-3,5-dialkylphenyl)-2H-benzotriazoles with straight or branched alkenes of 8 to 30 carbon atoms in the presence of an acid catalyst at 100.degree.-200.degree. C. The liquid mixtures exhibit outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.

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